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StringBuilder.Insert Method (Int32, Char[], Int32, Int32)

Inserts the string representation of a specified subarray of Unicode characters into this instance at the specified character position.

Namespace:  System.Text
Assembly:  mscorlib (in mscorlib.dll)

member Insert : 
        index:int * 
        value:char[] * 
        startIndex:int * 
        charCount:int -> StringBuilder 


Type: System.Int32
The position in this instance where insertion begins.
Type: System.Char[]
A character array.
Type: System.Int32
The starting index within value.
Type: System.Int32
The number of characters to insert.

Return Value

Type: System.Text.StringBuilder
A reference to this instance after the insert operation has completed.


value is a null reference (Nothing in Visual Basic), and startIndex and charCount are not zero.


index, startIndex, or charCount is less than zero.


index is greater than the length of this instance.


startIndex plus charCount is not a position within value.


Enlarging the value of this instance would exceed MaxCapacity.

Existing characters are shifted to make room for the new text. The capacity of this instance is adjusted as needed.

The following example demonstrates the Insert method.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.